On Jan 27, 9:14 am, "RBM" rbm2(remove wrote:
If the wind is blowing on that damper, some is gonna get through, especially
if it's a short run of duct. One thing you may want to check though, there
should be another damper right inside the outlet flange of the fan itself.
If it's missing, certainly more air will get through, than should


I recently bought a couple of mid range type bath fans made by 2
different major manufacturers. I was very surprised to see how
poorly designed the swinging damper was. In both of them, it was
very easy for the damper to get hung up by just shifting maybe 1/16 of
an inch to the side, at which point it would hit the side and bind.
If you're ever installing one of these, make sure the damper is
working correctly before you install it and again before you close up
the ceiling. It's also possible in the above case that someone had a
problem with the damper in this fan not opening correctly and removed
it, which would be real tempting if you could get it out without
tearing the ceiling apart.







"Donna" wrote in messagenews:IVIuh.1059$Pk5.452@trndny04...



Our bathroom has a ceiling fan/light combination that lets in one hell of
a draft. During our saga about the leaking bathroom roof (resolved, it
seems, finally), I got a look at the construction, and the exhaust fan
shunts the air through something that looks a bit like a dryer hose, to a
circular exterior port on the house. That port is hooded, and there is
some kind of apparently useless circular "flap" that does very little to
keep cold (!!! it was 20 below last night) air out of the bathroom.

If you wizards can suggest a way to solve this, other than only showering
in the summer, I would be eternally grateful.

Donna- Hide quoted text -- Show quoted text -